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I am getting all of the parts to construct the Collosalus and had a question about the power supply. Am planning on building the 9V version. Can I use a OneSpot or any other positive ground, negative tip power supply? Looking at the schematic and wiring guide, it appears that the tip is positive. The 18V power supply for the MXR 117 shows negative tip and positive sleeve.
Thanks

Purchased the last Rangemaster PCB a couple of weeks ago and could not get it to work initially. Something was grounding out the circuit causing only hum and battery got extremely hot in a few seconds.  I double and tripled checked everything and narrowed the problem to either D1 and R3.  Pulled out both and the board was still grounding out.  I had to scrape around the pads on the bottom of the board (not the grounded side of these components) so that they were not touching the ground plane.  It was not a solder bridge since I had to scrape the copper away from the pads.  Don't know if this was a problem with the board, but after I isolated the 2 pads from the ground, the unit works fine.  Don't know if anyone else has run into this before.

Hi, I am new to this board and I have built a couple of Orange Squeezer pedals (GCC not MadBean) and am having problems with one of them.  After a few hours, it quit working.  Voltages were off on Q1 an 2 and IC1.  Swapped them out and it would not work until I replaced Q1.  Put it back on my pedal board, and after an hour or so, it quit again.  Went over the board, soldered connections, etc with a fine tooth comb and could not find any problems.  I am using a 1 spot 9V DC adaptor that reads about 9.5 VDC and was wondering if this could be causing the transistors to burn out.  The other 2 I build are not experiencing this problem.  Any suggestions?  GCC does not have a forum like this so that is why I am here asking questions.

Thanks,

Dan